<?php

abstract class acache_class {
	
	
	public abstract function get($id);
	
	public abstract function mget($ids);
	
	public abstract function set($id, $value, $expire = 0, $dependency = null);
	
	public abstract function add($id, $value, $expire = 0, $dependency = null) ;
	
	public abstract function del($id) ;
	
	public abstract function flush() ;

}

?>